Compaction Behavior of Co-Amorphous Systems

Area of Science:

• Pharmaceutical Sciences
• Materials Science
• Drug Delivery

Background:

• Co-amorphous systems enhance the solubility of poorly water-soluble drugs.
• The impact of downstream processing, specifically compaction, on co-amorphous solid-state stability is not well understood.
• Investigating compaction properties is crucial for developing stable co-amorphous dosage forms.

Purpose of the Study:

• To evaluate the compaction behavior of co-amorphous systems.
• To assess the solid-state stability of co-amorphous materials after compaction.
• To determine the mechanical properties of co-amorphous tablets.

Main Methods:

• Model co-amorphous systems of carvedilol with aspartic acid and tryptophan were prepared using spray drying.
• Solid-state characterization was performed using X-ray Powder Diffraction (XRPD), Differential Scanning Calorimetry (DSC), and Scanning Electron Microscopy (SEM).
• Co-amorphous tablets were fabricated using a compaction simulator with varying concentrations of microcrystalline cellulose (MCC) as a filler.

Main Results:

• Co-amorphous systems exhibited high compressibility and plastic deformation during compaction.
• Tablet tensile strength remained consistent around 3.8 MPa, while disintegration time increased with higher co-amorphous content.
• No evidence of recrystallization was observed in the co-amorphous systems post-compaction.

Conclusions:

• Co-amorphous systems demonstrate excellent mechanical stability and compressibility, suitable for tablet formulation.
• These systems can undergo plastic deformation under pressure, forming robust tablets.
• Co-amorphous drug formulations are stable under compaction stress, indicating their potential for pharmaceutical applications.